A106895 Primes of the form 3x^2+xy+4y^2.

3, 17, 37, 71, 79, 101, 103, 149, 239, 241, 251, 271, 277, 307, 347, 383, 397, 401, 457, 571, 617, 653, 659, 661, 733, 769, 773, 811, 853, 863, 929, 1019, 1051, 1061, 1097, 1109, 1123, 1153, 1187, 1223, 1249, 1259, 1283, 1297, 1301, 1303, 1381

Offset

1,1

Comments

Discriminant=-47.

Links

Vincenzo Librandi and Ray Chandler, Table of n, a(n) for n = 1..10000 [First 1000 terms from Vincenzo Librandi]

N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)

Mathematica

Union[QuadPrimes2[3, 1, 4, 10000], QuadPrimes2[3, -1, 4, 10000]] (* see A106856 *)

Crossrefs

Primes in A243653.

Sequence in context: A152908 A031386 A146813 * A106896 A097938 A354475

Adjacent sequences: A106892 A106893 A106894 * A106896 A106897 A106898

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved